Semaphor Alternatives

Openfire (formerly Wildfire) is a cross-platform instant messaging (IM) and groupchat server.

Secure instant messaging (IM) and private LAN chat solutions for organizing effective real-time communication system over office LANs, business and corporate large networks, or enterprise-size WANs and VPNs

Seamless project management and collaboration for your team.

Visit website Open Source $12.0 / Monthly (Per user)

Realtime XMPP and MQTT Software and Infrastructure as a Service.

Open Source

Collaborative Project Planning App

The massively-scalable XMPPJabber mobile messaging platform, for mobile and web, by Erlang Solutions

Prosody is a modern flexible communications server for Jabber/XMPP written in Lua.

Open Source

handy and feature-rich enterprise multi-device messenger available for server or cloud – Slack-like, but not Slack-limited

A messaging app for teams who see through the Earth!

Infinitely flexible. Incredibly easy to use. Great mobile apps. It's free. Trello keeps track of everything, from the big picture to the minute details.

freemium $12.5 / Monthly (Per user - Business Class)

Asana project management is an effort to re-imagine how we work together, through modern productivity software. Fast and versatile, Asana helps individuals and groups get more done.

freemium $11.99 / Monthly (Per user - Premium)

A simple and elegant project management system.

paid Free Trial $99.0 / Monthly (flat price)

Microsoft Teams provides the enterprise-level security, compliance and management features you expect from Office 365, including broad support for compliance standards, and eDiscovery and legal hold for channels, chats, and files.

Apache Vysper aims to be a modular, full featured XMPP (Jabber) server.